WYSIWYG Performance

Points to emphasize about the analysis --

• The performance information derives from the CTA and how the compiler maps ZPL programs onto it

• Performance is not precise, but given relatively

  • E.G. reduction is more expensive than flood +<< > >>
  • To be machine independent, performance could not be given in nanoseconds

• Cues indicate when communication is being performed (WYSIWYG):

  A := A + B; -- No communicaton
  
  A := A + B@e; -- Yes, communicaton

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